Unbeatable reliability – Voith variable speed fluid couplings in continuous operation for almost 60 years with no unplanned downtime
Although the power plant operator has long since had to recondition the surrounding components in the driveline, the variable speed fluid coupling in the Šoštanj power plant has been operating reliably for 58 years. With its compact, robust design, the coupling is especially well suited to extreme ambient conditions such as heat and cold. It uses the hydrodynamic principle, that is, the force is transmitted without wear. The coupling lifetime is consequently many times that of a variable frequency drive. This saves the operator maintenance and service costs.
At the same time, the variable speed fluid coupling provides the operator with additional advantages. Thanks to the mechanical separation of the drive side from the driven side, the coupling protects the entire driveline against vibrations and impacts. In addition, the motor runs up to speed without load and the driven machine accelerates gently. This reduces the load on the driveline and extends the lifetime of the individual components. The variable speed fluid coupling increases the availability of the entire system while avoiding the costs and loss of revenue that come with unplanned downtime.
The Šoštanj power plant in Slovenia is currently being expanded by another block. This block will provide 600 MW of power. Voith is supplying three Vorecon variable speed planetary gears and eight geared variable speed couplings for the new block.
Voith Turbo, a division of Voith GmbH, specializes in intelligent drive solutions and systems. Our customers in the oil and gas, energy, mining and metals processing, marine propulsion, rail and commercial vehicles industries rely on solutions from Voith.
Voith sets the standards in the energy, oil & gas, paper, raw materials and transportation & automotive markets. Founded in 1867, Voith employs more than 43,000 people, generates €5.7 billion in sales, operates in over 50 countries around the world and is today one of the biggest family-owned companies in Europe.